springboot全局异常拦截器友好异常提示案例搞代码

本文由搞代码简单介绍springboot全局异常拦截器友好异常提示简单案例演示
1、添加config 配置类

package com.gaodaima.config;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerExceptionResolver;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.view.json.MappingJackson2JsonView;

@Configuration
public class ExceptionConfiguration implements HandlerExceptionResolver {

    @Override
    public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,
            Exception ex) {
        ModelAndView mv = new ModelAndView(new MappingJackson2JsonView());    //返回json
        String exInfo = ex.toString().replaceAll("\n", "");        
        boolean status = exInfo.contains("Subject does not have permission");        
        if(status){
            exInfo = "[没有此页面的访问权限]" + exInfo;
        }else {
            System.out.println("==============异常开始=============");
            ex.printStackTrace();
            System.out.println("==============异常结束=============");
        }
        mv.addObject("exception", exInfo);
        mv.addObject("result", "exception");
        return mv;
    }
}

package com.gaodaima.config;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.servlet.HandlerExceptionResolver;

import org.springframework.web.servlet.ModelAndView;

import org.springframework.web.servlet.view.json.MappingJackson2JsonView;

@Configuration

public class ExceptionConfiguration implements HandlerExceptionResolver {

@Override

public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,

Exception ex) {

ModelAndView mv = new ModelAndView(new MappingJackson2JsonView()); //返回json

String exInfo = ex.toString().replaceAll("\n", "");

boolean status = exInfo.contains("Subject does not have permission");

if(status){

exInfo = "[没有此页面的访问权限]" + exInfo;

}else {

System.out.println("==============异常开始=============");

ex.printStackTrace();

System.out.println("==============异常结束=============");

}

mv.addObject("exception", exInfo);

mv.addObject("result", "exception");

return mv;

}

2、在逻辑类的方法上抛出异常 throws Exception，比如

/**删除
 * @param out
 * @throws Exception
 */
@RequestMapping(value="/delete")
@RequiresPermissions("autograph:del")
@ResponseBody
public Object delete() throws Exception{
    Map<String,String> map = new HashMap<String,String>();
    String errInfo = "success";
    //xxxx
    map.put("result", errInfo);                //返回结果
    return map;
}

/**删除

* @param out

* @throws Exception

@RequestMapping(value="/delete")

@RequiresPermissions("autograph:del")

@ResponseBody

public Object delete() throws Exception{

Map<String,String> map = new HashMap<String,String>();

String errInfo = "success";

//xxxx

map.put("result", errInfo); //返回结果

return map;

}

3、前端页面接收异常结果

//发送 post 请求提交保存
$.ajax({
	xhrFields: {
		withCredentials: true
	},
        type: "POST",
        url: httpurl+'xxxx/delete',
     data: {tm:new Date().getTime()},
        dataType:"json",
        success: function(data){
            if("success" == data.result){
                
            }else if ("exception" == data.result){
                alert("模块异常"+data.exception);//显示异常
                
            }
        }
    });

//发送 post 请求提交保存

$.ajax({

xhrFields: {

withCredentials: true

type: "POST",

url: httpurl+'xxxx/delete',

data: {tm:new Date().getTime()},

dataType:"json",

success: function(data){

if("success" == data.result){

}else if ("exception" == data.result){

alert("模块异常"+data.exception);//显示异常

}

});

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